<template>
    <!--  -->
    <el-container class="home-container">
        <el-header>
            <div>
                <img src="../img/heima.png">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="bl ? '64px' : '200px'">
                <!-- 点击 切换菜单的折叠 -->
                <div class="toggle-button" @click="bl = !bl">|||</div>
                <!-- 侧边栏菜单区域 -->
                <el-menu :collapse-transition="false" :collapse="bl" unique-opened="true" background-color="#333744"
                    text-color="#fff" active-text-color="#409Eff" router :default-active="activePath">
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id + ''" v-for="(item, index) in menulist" :key="item.id">
                        <!-- 一级菜单模板区域 -->
                        <template slot="title">
                            <!-- 图标 -->
                            <i :class="iconsList[index]"></i>
                            <!-- 文本 -->
                            <span>{{ item.authName }}</span>
                        </template>
                        <!-- 二级菜单 -->
                        <el-menu-item @click="saveNavState('/' + item.path)" :index="'/' + item.path"
                            v-for="item in item.children" :key="item.id">
                            <template slot="title">
                                <!-- 图标 -->
                                <i class="el-icon-menu"></i>
                                <!-- 文本 -->
                                <span>{{ item.authName }}</span>
                            </template>
                        </el-menu-item>

                    </el-submenu>
                </el-menu>
            </el-aside>
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>
<script>
export default {
    data() {
        return {
            //左侧菜单栏数据
            menulist: [],
            //左侧菜单栏图标数据
            iconsList: [
                'iconfont icon-users',
                'iconfont icon-tijikongjian',
                'iconfont icon-shangpin',
                'iconfont icon-danju',
                'iconfont icon-baobiao'
            ],
            //切换菜单栏折叠
            bl: false,
            //点击高亮
            activePath: ''
        }
    },
    created() {
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        //退出登录实现
        logout() {
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
        //获取菜单栏数据
        async getMenuList() {
            const { data: res } = await this.$http.get('menus')
            if (res.meta.status !== 200) return this.$message.error()
            this.menulist = res.data
        },
        //获取地址,保持高亮
        saveNavState(value) {
            window.sessionStorage.setItem('activePath', value)
            this.activePath = value
        }

    }
}
</script>
<style lang="less" scoped>
.home-container {
    height: 100%;
}

.el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;

    >div {
        display: flex;
        align-items: center;

        span {
            margin-left: 15px;
        }
    }

}

.el-aside {
    background-color: #333744;

    .toggle-button {
        background-color: #4a5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        cursor: pointer;
        letter-spacing: 0.2em;
    }

    .el-menu {
        border-right: none;
    }
}

.el-main {
    background-color: #eaedf1;
}

.iconfont {
    margin-right: 10px;
}
</style>